NR NR/L3/TRK/4004 ISSUE 2 PDF

This Network Rail standard specifies the requirements for the design and manufacture of switch and crossing units and (S&C) assemblies. It also specifies those components to be used in the manufacturing process and methods of application.

This standard applies to the manufacture and despatch of new S&C for use in Network Rail controlled infrastructure. It also applies to trial assemblies where these are required by the purchaser.

Purpose

This standard specifies requirements for the manufacture and assembly of switches and crossings (S&C).